151645 has 8 divisors (see below), whose sum is σ = 196056. Its totient is φ = 111936.

The previous prime is 151643. The next prime is 151651. The reversal of 151645 is 546151.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 151321 = 18^2 + 389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151645 - 2¹ = 151643 is a prime.

It is a Duffinian number.

151645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102 + ... + 1231.

It is an arithmetic number, because the mean of its divisors is an integer number (24507).

2¹⁵¹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

151645 is a deficient number, since it is larger than the sum of its proper divisors (44411).

151645 is a wasteful number, since it uses less digits than its factorization.

151645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 600, while the sum is 22.

The square root of 151645 is about 389.4162297594. The cubic root of 151645 is about 53.3264531055.

Adding to 151645 its reverse (546151), we get a palindrome (697796).

The spelling of 151645 in words is "one hundred fifty-one thousand, six hundred forty-five".